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, G H POND Process of Reducing Wood'to Fine Fiber `or Peper Pulp.

No. 243,616. Patented June y28, 1881.

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UNITED STATES PATENT OFFICE.

GOLDSBURY H. POND, OF NEW YORK, N. Y.

PROCESS OF REDUCING WOOD TO FINE FIBER OR PAPER-PULP.

SPECIFICATION Vforming part of Letters Patent No. 243,616, dated June 28, 1881.

Application led November 13, 1880.

To all whom. it may concern Be it known that I, GoLDsBURY H. POND, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful 'Improvements in the Process of Reducing Wood to Fine Fiber or Paper-Pulp; and I do hereby declare the following to be a full, clear, and exact description of the invention,such as willenable others skilled in the art to which it appertains to make and use the same.

My invention consists in reducing wood sawdust to ne ber by disintegrating it by means of rapidly-revolving arms in a closed cylinder without the use of water, and the arms not touching any part of the cylinder,'as hereinafter described.

- The object of my invention is to more perfectly preserve the ber ot' the wood and to manufacture the same more rapidly than heretofore done.

To carry out my invention I construct a machine as shown by the illustration in the accompanying drawings, in which- Figure 1 is a side elevation of said machine. Fig. 2 is a cross-section of the same.

A is a closed cylinder. Bis a shaft running through the centerof said cylinder. C are arms attached to the shaft B. D is the hopper into which the sawdust is to be placed. E is an opening in the side of the cylinder through which the sawdust passes from the hopper to the cylinder. F is an adjustable dischargeopening.

G is an adjustable segment of the (Model.)

cylinder to regulate the space between the inner surface of the periphery and the ends of the revolving arms for the purpose of adaptin g it to the di'erent degrees of eoarsen ess and hardness of' the sawdust to be disintegrated. The dischargeopening F is made adjustable for the purpose of regulating the iineness of the ber discharged. The nearer the openingis to the shaft or center of the machine the ner will be the ber discharged.

The operation is as follows: The sawdustis placed in the hopper D, and the shaft B, carrying the arm C, is made to revolve with great. rapidity, so that as the sawdust enters the cyl inder it is rapidly forced around the same, and as the particles are reduced to the requisite neness of ber they are discharged through the adjustable opening F.

GOLDSBURY PI. POND.

Vitnesses S. M. OsGooD, ALsoN ROBERTS. 

